Vulnerability-Lookup

GHSA-3HVJ-CH28-P4X7

Vulnerability from github – Published: 2026-01-22 18:30 – Updated: 2026-01-22 18:30

Details

VB-Audio Matrix and Matrix Coconut (versions ending in 1.0.2.2 and 2.0.2.2 and earlier, respectively), contain a local privilege escalation vulnerability in the VBMatrix VAIO virtual audio driver (vbmatrixvaio64*_win10.sys). The driver allocates a 128-byte non-paged pool buffer and, upon receiving IOCTL 0x222060, maps it into user space using an MDL and MmMapLockedPagesSpecifyCache. Because the allocation size is not page-aligned, the mapping exposes the entire 0x1000-byte kernel page containing the buffer plus adjacent non-paged pool allocations with read/write permissions. An unprivileged local attacker can open a device handle (using the required 0x800 attribute flag), invoke the IOCTL to obtain the mapping, and then read or modify live kernel objects and pointers present on that page. This enables bypass of KASLR, arbitrary kernel memory read/write within the exposed page, corruption of kernel objects, and escalation to SYSTEM.

Severity ?

8.5 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23763"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-668"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-22T17:16:37Z",
    "severity": "HIGH"
  },
  "details": "VB-Audio Matrix and Matrix Coconut (versions ending in 1.0.2.2 and 2.0.2.2 and earlier, respectively), contain a local privilege escalation vulnerability in the VBMatrix VAIO virtual audio driver (vbmatrixvaio64*_win10.sys). The driver allocates a 128-byte non-paged pool buffer and, upon receiving IOCTL 0x222060, maps it into user space using an MDL and MmMapLockedPagesSpecifyCache. Because the allocation size is not page-aligned, the mapping exposes the entire 0x1000-byte kernel page containing the buffer plus adjacent non-paged pool allocations with read/write permissions. An unprivileged local attacker can open a device handle (using the required 0x800 attribute flag), invoke the IOCTL to obtain the mapping, and then read or modify live kernel objects and pointers present on that page. This enables bypass of KASLR, arbitrary kernel memory read/write within the exposed page, corruption of kernel objects, and escalation to SYSTEM.",
  "id": "GHSA-3hvj-ch28-p4x7",
  "modified": "2026-01-22T18:30:41Z",
  "published": "2026-01-22T18:30:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23763"
    },
    {
      "type": "WEB",
      "url": "https://forum.vb-audio.com/viewtopic.php?p=7527#p7527"
    },
    {
      "type": "WEB",
      "url": "https://forum.vb-audio.com/viewtopic.php?p=7574#p7574"
    },
    {
      "type": "WEB",
      "url": "https://github.com/emkaix/security-research/tree/main/CVE-2026-23763"
    },
    {
      "type": "WEB",
      "url": "https://vb-audio.com"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/vb-audio-matrix-drivers-local-privilege-escalation-via-kernel-memory-exposure"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-23763 (GCVE-0-2026-23763)

Vulnerability from cvelistv5 – Published: 2026-01-22 16:17 – Updated: 2026-01-22 18:25

Title

VB-Audio Matrix Drivers Local Privilege Escalation via Kernel Memory Exposure

Summary

Severity ?

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-668 - Exposure of Resource to Wrong Sphere

Assigner

VulnCheck

References

URL

Tags

	https://github.com/emkaix/security-research/tree/…	technical-descriptionexploit
	https://forum.vb-audio.com/viewtopic.php?p=7574#p7574	release-notespatch
	https://forum.vb-audio.com/viewtopic.php?p=7527#p7527	release-notespatch
	https://vb-audio.com/	product
	https://www.vulncheck.com/advisories/vb-audio-mat…	third-party-advisory

Impacted products

Vendor

Product

Version

VB-Audio Software

Matrix

Affected: 0 , ≤ 1.0.2.2 (semver)

VB-Audio Software

Matrix Coconut

Affected: 0 , ≤ 2.0.2.2 (semver)

Credits

Klaus Hahnenkamp

Show details on NVD website

JSON

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-23763",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-22T18:25:12.529261Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
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      }
    ],
    "cna": {
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          "vendor": "VB-Audio Software",
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      "source": {
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  "cveMetadata": {
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    "datePublished": "2026-01-22T16:17:12.733Z",
    "dateReserved": "2026-01-15T18:42:20.939Z",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3HVJ-CH28-P4X7

CVE-2026-23763 (GCVE-0-2026-23763)

Tags

Sightings

Nomenclature